hapto nomenclature

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In organometallic compound: s- and p-block organometallic compounds
This convention is known as hapto nomenclature. A single point of attachment, η¹, is usually not explicitly indicated, as in the above formula for dimethylmercury, a monohapto species. The compound with the common name ferrocene has the systematic name bis(η⁵-cyclopentadienyl)iron, where the number of cyclopentadienyl ligands (two) is indicated by…
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